Measurements from the new study and previous Cassini data suggest the moon's south pole has an ice layer on top of water on top of silicate rock. If that's true, water circulating through the rock would pick up elements such as phosphorous, sulfur, potassium and sodium into the liquid. These elements are essential for making molecules that life needs, Lunine said.
http://www.cnn.com/2014/04/03/tech/innovation/moon-saturn-ocean/index.html
I call dibs on underground/water moon based home!!!